The International Association of Machinists and Aerospace Workers (IAM) is an AFL-CIO/CLC trade union representing approx. 646,933 workers as of 2006 in more than 200 industries with most of its membership in the United States and Canada.

The International Brotherhood of Teamsters (IBT), commonly shortened to Teamsters, is one of the nation’s largest private-sector labor unions. Principally representing employees in the trucking, railway, and airline industries, the Teamsters union has over 1.2 million members.[1] The Teamsters union is notorious for its history of corruption and

The International Longshoremen’s Association is a labor union representing longshore workers along the East Coast of the United States and Canada, the Gulf Coast, the Great Lakes, Puerto Rico, and inland waterways.